The 'I'll Be Home For Quismois' meme stems from Camila Cabello’s 2021 performance of the classic holiday song 'I'll Be Home for Christmas' during a PBS special at the White House. The internet quickly latched onto her unique, 'cursive' pronunciation of the word Christmas, which sounded like 'Quismois.' The clip exploded on TikTok and Twitter as users began parodying her stylized singing and using the audio to mark the arrival of the holiday season. It has since become an annual tradition for netizens to post the clip as soon as Halloween ends, solidifying its place as a modern digital holiday staple.